US451410A - William c - Google Patents

Description

W. G. MGINTIRE. HEET METAL VESSE No. 451,410. Patented Apr. 28,1891.

UNITED STATES WILLIAM C. MCINTIRE, OF VASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO THE IRON GLAD MANUFACTURING COMPANY, OF NEW YORK, N. Y.

SHEET-METAL VESSEL.

SPECIFICATION forming part of Letters Patent No. 451,410, dated April 28, 1891.

Application filed September 8,1890. Serial No. 364,231. (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM C. MCIN'IIRE, a citizen of the United States, residing at Washington city, in the District of Columbia,

have invented certain new and useful Improvements in Sheet-Metal Vessels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which IO it appertains to make and use the same.

My invention relates to certain new and useful improvements in sheet-metal vessels, and particularly to that class of vessels in which a pouring spout or lip is permanently con- I 5 nected with the walls or body portion of the vessel by a water-proof or leak-proof seam.

Prior to my invention, so far as I am aware, in vessels having a lip or spout secured to the body of the vessel it has been customary to provide thewall or body of the vessel with an opening corresponding approximately to the area of the base or lower end of the spout or lip, and during the process of manufacture to not only connect the spout with the body 2 5 by various kinds of metallic seams, but at the same time to secure in place over the opening in the body of the vessel a screen or strainer formed of an independent or supplementary piece of metal. In all such constructions the 0 addition of the supplementary screen or strainer necessarily involves the thickening or enlargement of the seam or fold in the metal, which is necessary in joining the several parts, and this increase in the thickness 5 of metal at this point is a serious disadvantage in any metallic vessel subjected to the action of heat, but is more especially objectionable in that class of metallic vessels which after construction are provided with a coat of enamel. The primary objection to any unnecessarily thick seam lies in the fact that under the different changes of temperature the vessel is subject to unequal degrees of eX- pansion and contraction, which ultimately re- 5 sults in straining the seam and eventuating in leaks at such point, and this not only is the case in such ware as may be provided with a coat of enamel,but by reason of the presence of the enamel such enamel is rendered more liable to abrasion or fracture at such thick points.

The object of my invention is to avoid as much as possible any unnecessary increase in the thickness of the seam constituting the juncture between the spout and body and at the same time to lessen the liability of leakage at such point, and with this end and obj ect in view my invention consists in the generic idea of perforating the body or wall of the vessel at such locality as it may be designed to attach the spout and providing at such point and surrounding said perforations an interiorly-compressed groove or channel corresponding in contour with the edge or base of the spout to be attached, then locating in said groove the edge of the spout and upsetting and flattening down against the wall of the vessel said grooves with the edge of the spout contained thereimwhereby a close and permanentjoint is made between the body of the vessel and the spout, leaving the point of contact between the spout and body on the exterior surface absolutely free from any rib or projection and avoiding the necessity for the use of any auxiliary or independent strainerin other words, securing the production of a metallic vessel provided with a spout or lip and strainer out of practically two parts instead of three.

In the accompanying drawings, Figure 1 represents aplan view of the body portion of an ordinary coffee-pot; Fig. 2, a side view of a suitable spout adapted to be connected with said vessel shown at Fig. 1. Fig. 3 is a central vertical section taken at the lineococ of Fig. 8 5 1, together with the spout located within the groove surrounding the strainer portion of the wall of the vessel ready for the operation of upsetting. Fig. 4c is a similar view showing the relation of the parts after the upseto ting operation, and Fig. 5 is a similar view showing the relation of parts after the seam has been flattened down against the wall of the vessel. Fig. 6 shows a modified construction of the lower edge of the spout.

Similar letters denote like parts in the several figures of the drawings.

A represents the body of the vessel.

1 represents the strainer portion, made by small perforations a in the wall.

C represents the spent, and b a groove or channelcompressed in the exterior surface of the wall of the vessel.

In lieu of forming the spent with an ordinary thickness of metal at the edge which is to be located within the groove of the wall of the vessel, said edge may be provided with a fine wire, around or over which the edge of the metal of saidspout may be bent, as shown in Fig. 6 of the drawings, or in lieu of said wired edge the metal at such point of the spout may be returned upon itself. I have,

however, found from experience that for all practical purposes such wiring of the edge of the spout is 'not absolutely necessary, but

that a successful joint may be made in the manner shown in Figs. 3, -t, and

\V hat I claim as new, and desire to secure by Letters Patent, is

As a new article of manufacture, a sheetmetal vessel composed of a body and spout, the spout united to the body bya continuous folded seam, substantially as described, and the body perforated within the boundaries of the joint or seam to form a strainer, as hereinbeforc set forth.

In testimony whereof I affix my signature in presence of two witnesses.

'WM. 0. MCINTIRE. lVitnesses:

1). G. STUART, W. O. DUFF.

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